CXCL5 and posterior cortical atrophy: To identify new biomarkers for PCa in liquid biopsies, in the present work we measured the circulating levels of sTWEAK and its receptors sFn14 and sCD163, in addition to two chemokines, CXCL5 and CCL7, all of which are closely related to prostate tumorigenesis [17, 19] but never analyzed in human PCa liquid biopsies.